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How to pass variables to a deferred infoWindow function

StephenLead

The sample at http://help.arcgis.com/en/webapi/javascript/arcgis/help/jssamples_start.htm#jssamples/widget_infowindowdeferred.html shows how to run a function to format the contents of an infoWindow.

It says "a function (getTextContent) is defined that will execute when a [feature] is clicked" and "In the getTextContent function we have access to the clicked graphic".

The content of the infoWindow is set with:

template.setContent(getTextContent);

and the function references the graphic object using:

function getTextContent(graphic) {

Is it possible to pass other variables into this function, so that they could be used within the function?

Thanks,
Steve

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Accepted answers

StephenLead

My brilliant colleague Danny came up with the resolution:

var infoTemplate = new esri.InfoTemplate();
infoTemplate.setTitle("title");
infoTemplate.x = "abc";
infoTemplate.setContent(buildChart);

function buildChart(graphic) {
        var x = this.x;

This allows you to access the value "abc" from within the buildChart function. Genius.

All comments

StephenLead

My brilliant colleague Danny came up with the resolution:

var infoTemplate = new esri.InfoTemplate();
infoTemplate.setTitle("title");
infoTemplate.x = "abc";
infoTemplate.setContent(buildChart);

function buildChart(graphic) {
        var x = this.x;

This allows you to access the value "abc" from within the buildChart function. Genius.

derekswingley1

Hey Steve,

I was implying that you could wrap the function you pass to setContent in another function. That way, variables you define in the function that wraps the function passed to setContent are accessible in the setContent function. It's not exactly what you asked for but is one way to avoid using globals.

StephenLead

Actually stack overflow has a good thread which should help me out here:

http://stackoverflow.com/questions/111102/how-do-javascript-closures-work

StephenLead

using a closure for vars you want to access inside your function.

Hi Derek,

Can you elaborate on that suggestion?

Thanks,
Steve

derekswingley1

I don't know of a way to do this...I think you're stuck referring to global variables or using a closure for vars you want to access inside your function.

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